Lalit Modi, who is being investigated for money laundering and FEMA violations, is a fugitive from Indian law. Swaraj said on Sunday that she was helping Modi on "humanitarian" grounds so that he could attend to his wife who was undergoing cancer treatment in Lisbon in August, 2014.

"Mr. Modi should sack Sushma Swaraj," said Gandhi on Monday.

Gandhi taunted Modi for promising to bring black money back to India, but instead he was "standing behind" Mr. Lalit Modi, who he described as the "black money master."